| 摘要 |
PURPOSE: A flange type nozzle of a double pipe form of a concentric inner cylinder is provided to maintain a steam generator without abscission or disassembly of a second system pipe connected to a pipe connection nozzle. CONSTITUTION: An external nozzle is a water supply nozzle or a steam nozzle which connects a steam generator(20) to a reactor vessel. One end of the external nozzle is connected to the reactor vessel. A flange is formed in the other end of the external nozzle. An internal cylinder(25) is inserted into the external nozzle and is arranged on the external nozzle and a concentric inner cylinder. A blinder(29) is connected in order to close the flange of the external nozzle. A plurality of connection members connects the blinder to the flange. |
